Home / 3,620.96-5,431.10-1,155.35

Finding the Fourth Proportional to 3,620.96, 5,431.10 and 1,155.35

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Solution

The fourth proportional to 3,620.96, 5,431.10 and 1,155.35 is: 1,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.96 : 5,431.10 = 1,155.35 : x
  2. Step 2: Convert to fraction form
    3,620.96/5,431.10 = 1,155.35/x
  3. Step 3: Cross multiply
    3,620.96x = 5,431.10 × 1,155.35
  4. Step 4: Simplify right side
    3,620.96x = 6,274,798.64
  5. Step 5: Solve for x
    x = 6,274,798.64/3,620.96
  6. Step 6: Final answer
    x = 1,732.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.